从程序中得到错误的输出.编译时没有错误

here is my header file:
#ifndef weeklyEmp_h
#define weeklyEmp_h

// SPECIFICATION FILE weeklyEmp.h
//
//----------------------------------------------------------------------
#include <string>
using namespace std;
class weeklyEmp{
public:
//constructors
weeklyEmp();
weeklyEmp (string initName,
    double initHours,
    double initRate,
    int initExemptions,
    string initFilingStatus);
//--modifiers
void set_hours(double thisWeeksHours);
//post: Set the hours worked for a given week
void set_rate(double thisWeeksRate);
//post: Change the employee's hourly rate of pay
//--accessors
double grosPay () const;
//post: Return gross pay with overtime
double incomeTax() const;
//post: Return the federal income tax
double FICATax() const;
//post: Return the social security tax
string name() const;
//post: Return the employee's name
private:
    string my_name;
    double my_hours;
    double my_rate;
    int my_exemptions;
    string my_filingStatus;

    };
#endif //weeklyEmp_h

这是一个包含的。cpp文件:

#include <iostream>
#include <string>
#include "weeklyEmp.h"
using namespace std;
const double WEEKLY_ALLOWANCE = 39.42;
const double FICA_TAX_RATE = 0.0765;
weeklyEmp::weeklyEmp()
{
my_name = "?name?";
my_hours = 0.0;
my_rate = 0.0;
my_exemptions; 0;
my_filingStatus = "?filingStatus?";
}
weeklyEmp::weeklyEmp(string initName,
    double initHours,
    double initRate,
    int initExemptions,
    string initFilingStatus)
{
    my_name; initName;
    my_hours; initHours;
    my_rate; initRate;
    my_exemptions; initExemptions;
    my_filingStatus; initFilingStatus;
}
//--modifiers
void weeklyEmp::set_hours(double thisWeeksHours)
    //post: Set the hours worked for a given week
{
    my_hours = thisWeeksHours;
}

void weeklyEmp::set_rate(double thisWeeksRate)
//post: Change the employee's hourly rate of pay
{
 my_rate = thisWeeksRate;
}
//--accessors
double weeklyEmp::grosPay() const
//post: Return gross pay with overtime
{if(my_hours <=40) return my_hours * my_rate;
else
return (40*my_rate) + (my_hours-40) * 1.5 * my_rate;
}
double weeklyEmp::incomeTax() const
//post: Return the federal income tax
{
double result(0.0);
double taxableIncome(grosPay() - my_exemptions * WEEKLY_ALLOWANCE); 
if(my_filingStatus == "S" || my_filingStatus == "s")
{
if (taxableIncome <= 23.00)
result = 0.00;
else if(taxableIncome <= 397.00)
result = 0.15 * (taxableIncome - 23.00);
else if(taxableIncome <= 928.00)
result = 56.10 + 0.28 * (taxableIncome - 397.00);
else if(taxableIncome <= 2121.00)
result = 204.78 + 0.33 * (taxableIncome - 928.00);
else
result = 598.47 + 0.28 * (taxableIncome - 2121.00);
} 
if(my_filingStatus == "M" || my_filingStatus == "m")
{
if(taxableIncome <= 65.00)
result = 0.00;
else if(taxableIncome <= 689.00)
result = 0.15 * (taxableIncome - 65.00);
else if(taxableIncome <= 1573.00)
result = 93.60 + 0.28 * (taxableIncome - 689.00);
else if(taxableIncome <= 3858.00)
result = 341.12 + 0.33 * (taxableIncome - 1573.00);
else
result = 1095.17 + 0.28 * (taxableIncome - 3858.00);
} 
/* round to the nearest penny */
/* include compfun.cpp for round function */
result = (result, 2);  
return result;
}
double weeklyEmp::FICATax() const
//post: Return the social security tax
{
    return grosPay() * FICA_TAX_RATE; 
}
string weeklyEmp::name() const
//post: Return the employee's name
{ 
 return my_name;
}

#include <iostream>
#include <string>
#include "weeklyEmp.h"
#include "COMPFUN.H"
using namespace std;

int main()
{
    string name;
    double rate;
    double hours;
    int exemptions;
    string filingStatus;


    cout <<"Name: ";
    cin >> name;
    cout << "Hourly Rate:";
    cin >> rate;
    cout << "Hours Worked:";
    cin >> hours;
    cout << "Exemptions: ";
    cin >> exemptions;
    cout<< "S) ingle / M) arried: ";
    cin >> filingStatus;
    cout << endl;

weeklyEmp emp(name, hours, rate, exemptions, filingStatus);
double net = emp.grosPay() - emp.incomeTax() - emp.FICATax();


cout << "Employee: " << name << endl;
cout << "Gross  Income  FICA   Net" << endl;
decimals(cout, 2);
cout << emp.grosPay()  << emp.incomeTax() <<emp.FICATax()  <<net  << endl;
cout.width(9); cout << emp.grosPay();
cout.width(13); cout << emp.incomeTax() << endl;


system("pause");
    return 0;
} 

这是我得到的垃圾输出。我认为错误是在。cpp文件(不是主要的，但包括在内)。我找不到它。

名称:马克每小时工资率:10工作时间:10豁免:1S) single/M) delivered: S

员工:马克总收入净额8567285355521621000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.002.00655397329697403930000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.007911888025824217100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.00按任意键继续…